Cybertruck December 29, 2025 | Electrek Tesla

Tesla’s 4680 battery supply chain collapses as partner writes down deal by 99%

Tesla’s 4680 battery supply chain collapses as partner writes down deal by 99%

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A major link in Tesla’s 4680 battery supply chain has just snapped. South Korean battery material supplier L&F Co. announced today that the value of its massive supply deal with Tesla has been sla...

A major link in Tesla’s 4680 battery supply chain has just snapped. South Korean battery material supplier L&F Co. announced today that the value of its massive supply deal with Tesla has been slashed by over 99%, signaling a catastrophic drop in demand for the automaker’s in-house battery cells.

This is arguably the strongest evidence yet that Tesla’s 4680 program, and the vehicle that relies on it, the Cybertruck, is in serious trouble.

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Source: Electrek Tesla

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